ISO

Isomorphic Algorithms, or ISOs, are programmes from the TRON System that rezzed from the Sea of Simulation spontaneously. They have no users and their programming is so intricate that it has formed a kind of digital DNA.

Characteristics
ISO codes are so intricate that even Kevin Flynn didn't quite understand it. Their lack of users made them unique and Flynn described them as being "Profoundly naive" yet "unimaginably wise". He could not explain how their existence came to be other than the fact that the "conditions [had been] right". Their digital DNA made them the only programmes known to reproduce of their own accord. Several 2nd generation ISOs were born and reported before the Purge. They acted and grew much like human children and fascinated many Basic programmes who had never seen child programmes before. When the ISOs were destroyed however, the Basic programmes forgot about the existence of child programmes.

Appearance
The appearance of ISOs seemed to vary muhc more than that of Basic programmes. They almost always wore black (with the exception of their Queen, Radia). 1st generation, civilian ISOs tended to have white citcuitry, 2nd generation ISOs had purple circuits, and ISOs of other ranks had green and cyan or blue circuits.

Genocide
Between 1989 and 1991, C.L.U. 2's regime erradicated the entire system of all ISOs except for one, Quorra, who remained in hiding with Kevin Flynn. Quorra and her daughter Alivia are the last known ISOs to reamain in existence. It is not known whether the conditions in the Sea of Simulation will ever be right enough to spontaneously create ISOs ever again.